| /* GStreamer |
| * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000 Wim Taymans <wtay@chello.be> |
| * 2002 Thomas Vander Stichele <thomas@apestaart.org> |
| * |
| * gstutils.h: Header for various utility functions |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| |
| #ifndef __GST_UTILS_H__ |
| #define __GST_UTILS_H__ |
| |
| #include <glib.h> |
| #include <gst/gstbin.h> |
| #include <gst/gstparse.h> |
| |
| G_BEGIN_DECLS |
| |
| void gst_util_set_value_from_string (GValue *value, const gchar *value_str); |
| void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value); |
| void gst_util_dump_mem (const guchar *mem, guint size); |
| |
| guint64 gst_util_gdouble_to_guint64 (gdouble value); |
| gdouble gst_util_guint64_to_gdouble (guint64 value); |
| |
| /** |
| * gst_guint64_to_gdouble: |
| * @value: the #guint64 value to convert |
| * |
| * Convert @value to a gdouble. |
| * |
| * Returns: @value converted to a #gdouble. |
| */ |
| |
| /** |
| * gst_gdouble_to_guint64: |
| * @value: the #gdouble value to convert |
| * |
| * Convert @value to a guint64. |
| * |
| * Returns: @value converted to a #guint64. |
| */ |
| #ifdef WIN32 |
| #define gst_gdouble_to_guint64(value) gst_util_gdouble_to_guint64(value) |
| #define gst_guint64_to_gdouble(value) gst_util_guint64_to_gdouble(value) |
| #else |
| #define gst_gdouble_to_guint64(value) ((guint64) (value)) |
| #define gst_guint64_to_gdouble(value) ((gdouble) (value)) |
| #endif |
| |
| guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom); |
| |
| guint64 gst_util_uint64_scale_int (guint64 val, gint num, gint denom); |
| |
| void gst_print_pad_caps (GString *buf, gint indent, GstPad *pad); |
| void gst_print_element_args (GString *buf, gint indent, GstElement *element); |
| |
| |
| GType gst_type_register_static_full (GType parent_type, |
| const gchar *type_name, |
| guint class_size, |
| GBaseInitFunc base_init, |
| GBaseFinalizeFunc base_finalize, |
| GClassInitFunc class_init, |
| GClassFinalizeFunc class_finalize, |
| gconstpointer class_data, |
| guint instance_size, |
| guint16 n_preallocs, |
| GInstanceInitFunc instance_init, |
| const GTypeValueTable *value_table, |
| GTypeFlags flags); |
| |
| |
| /* Macros for defining classes. Ideas taken from Bonobo, which took theirs |
| from Nautilus and GOB. */ |
| |
| /* FIXME: Use g_once_init_* unconditionally once we depend on glib 2.14 */ |
| #if GLIB_CHECK_VERSION (2, 14, 0) |
| #define __gst_once_init_enter(val) (g_once_init_enter (val)) |
| #define __gst_once_init_leave(val,newval) (g_once_init_leave (val, newval)) |
| #else |
| #define __gst_once_init_enter(val) (G_UNLIKELY (*(val) == 0)) |
| #define __gst_once_init_leave(val,newval) (*(val) = newval) |
| #endif |
| |
| /** |
| * GST_BOILERPLATE_FULL: |
| * @type: the name of the type struct |
| * @type_as_function: the prefix for the functions |
| * @parent_type: the parent type struct name |
| * @parent_type_macro: the parent type macro |
| * @additional_initializations: function pointer in the form of |
| * void additional_initializations (GType type) that can be used for |
| * initializing interfaces and the like |
| * |
| * Define the boilerplate type stuff to reduce typos and code size. Defines |
| * the get_type method and the parent_class static variable. |
| * |
| * <informalexample> |
| * <programlisting> |
| * GST_BOILERPLATE_FULL (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT, _do_init); |
| * </programlisting> |
| * </informalexample> |
| */ |
| #define GST_BOILERPLATE_FULL(type, type_as_function, parent_type, parent_type_macro, additional_initializations) \ |
| \ |
| static void type_as_function ## _base_init (gpointer g_class); \ |
| static void type_as_function ## _class_init (type ## Class *g_class);\ |
| static void type_as_function ## _init (type *object, \ |
| type ## Class *g_class);\ |
| static parent_type ## Class *parent_class = NULL; \ |
| static void \ |
| type_as_function ## _class_init_trampoline (gpointer g_class, \ |
| gpointer data) \ |
| { \ |
| parent_class = (parent_type ## Class *) \ |
| g_type_class_peek_parent (g_class); \ |
| type_as_function ## _class_init ((type ## Class *)g_class); \ |
| } \ |
| \ |
| GType type_as_function ## _get_type (void); \ |
| \ |
| GType \ |
| type_as_function ## _get_type (void) \ |
| { \ |
| /* The typedef for GType may be gulong or gsize, depending on the \ |
| * system and whether the compiler is c++ or not. The g_once_init_* \ |
| * functions always take a gsize * though ... */ \ |
| static volatile gsize gonce_data; \ |
| if (__gst_once_init_enter (&gonce_data)) { \ |
| GType _type; \ |
| _type = gst_type_register_static_full (parent_type_macro, \ |
| g_intern_static_string (#type), \ |
| sizeof (type ## Class), \ |
| type_as_function ## _base_init, \ |
| NULL, /* base_finalize */ \ |
| type_as_function ## _class_init_trampoline, \ |
| NULL, /* class_finalize */ \ |
| NULL, /* class_data */ \ |
| sizeof (type), \ |
| 0, /* n_preallocs */ \ |
| (GInstanceInitFunc) type_as_function ## _init, \ |
| NULL, \ |
| (GTypeFlags) 0); \ |
| additional_initializations (_type); \ |
| __gst_once_init_leave (&gonce_data, (gsize) _type); \ |
| } \ |
| return (GType) gonce_data; \ |
| } |
| |
| #define __GST_DO_NOTHING(type) /* NOP */ |
| |
| /** |
| * GST_BOILERPLATE: |
| * @type: the name of the type struct |
| * @type_as_function: the prefix for the functions |
| * @parent_type: the parent type struct name |
| * @parent_type_macro: the parent type macro |
| * |
| * Define the boilerplate type stuff to reduce typos and code size. Defines |
| * the get_type method and the parent_class static variable. |
| * |
| * <informalexample> |
| * <programlisting> |
| * GST_BOILERPLATE (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT); |
| * </programlisting> |
| * </informalexample> |
| */ |
| #define GST_BOILERPLATE(type,type_as_function,parent_type,parent_type_macro) \ |
| GST_BOILERPLATE_FULL (type, type_as_function, parent_type, parent_type_macro, \ |
| __GST_DO_NOTHING) |
| |
| /* Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2) |
| * implement GstImplementsInterface for that type |
| * |
| * After this you will need to implement interface_as_function ## _supported |
| * and interface_as_function ## _interface_init |
| */ |
| /** |
| * GST_BOILERPLATE_WITH_INTERFACE: |
| * @type: the name of the type struct |
| * @type_as_function: the prefix for the functions |
| * @parent_type: the parent type struct name |
| * @parent_type_as_macro: the parent type macro |
| * @interface_type: the name of the interface type struct |
| * @interface_type_as_macro: the interface type macro |
| * @interface_as_function: the interface function name prefix |
| * |
| * Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2) |
| * implement GstImplementsInterface for that type. |
| * |
| * After this you will need to implement interface_as_function ## _supported |
| * and interface_as_function ## _interface_init |
| */ |
| #define GST_BOILERPLATE_WITH_INTERFACE(type, type_as_function, \ |
| parent_type, parent_type_as_macro, interface_type, \ |
| interface_type_as_macro, interface_as_function) \ |
| \ |
| static void interface_as_function ## _interface_init (interface_type ## Class *klass); \ |
| static gboolean interface_as_function ## _supported (type *object, GType iface_type); \ |
| \ |
| static void \ |
| type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass) \ |
| { \ |
| klass->supported = (gboolean (*)(GstImplementsInterface*, GType))interface_as_function ## _supported; \ |
| } \ |
| \ |
| static void \ |
| type_as_function ## _init_interfaces (GType type) \ |
| { \ |
| static const GInterfaceInfo implements_iface_info = { \ |
| (GInterfaceInitFunc) type_as_function ## _implements_interface_init,\ |
| NULL, \ |
| NULL, \ |
| }; \ |
| static const GInterfaceInfo iface_info = { \ |
| (GInterfaceInitFunc) interface_as_function ## _interface_init, \ |
| NULL, \ |
| NULL, \ |
| }; \ |
| \ |
| g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, \ |
| &implements_iface_info); \ |
| g_type_add_interface_static (type, interface_type_as_macro, \ |
| &iface_info); \ |
| } \ |
| \ |
| GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \ |
| parent_type_as_macro, type_as_function ## _init_interfaces) |
| |
| /** |
| * GST_CALL_PARENT: |
| * @parent_class_cast: the name of the class cast macro for the parent type |
| * @name: name of the function to call |
| * @args: arguments enclosed in '( )' |
| * |
| * Just call the parent handler. This assumes that there is a variable |
| * named parent_class that points to the (duh!) parent class. Note that |
| * this macro is not to be used with things that return something, use |
| * the _WITH_DEFAULT version for that |
| */ |
| #define GST_CALL_PARENT(parent_class_cast, name, args) \ |
| ((parent_class_cast(parent_class)->name != NULL) ? \ |
| parent_class_cast(parent_class)->name args : (void) 0) |
| |
| /** |
| * GST_CALL_PARENT_WITH_DEFAULT: |
| * @parent_class_cast: the name of the class cast macro for the parent type |
| * @name: name of the function to call |
| * @args: arguments enclosed in '( )' |
| * @def_return: default result |
| * |
| * Same as GST_CALL_PARENT(), but in case there is no implementation, it |
| * evaluates to @def_return. |
| */ |
| #define GST_CALL_PARENT_WITH_DEFAULT(parent_class_cast, name, args, def_return)\ |
| ((parent_class_cast(parent_class)->name != NULL) ? \ |
| parent_class_cast(parent_class)->name args : def_return) |
| |
| /* Define possibly unaligned memory access method whether the type of |
| * architecture. */ |
| #if GST_HAVE_UNALIGNED_ACCESS |
| |
| #define _GST_GET(__data, __size, __end) \ |
| (GUINT##__size##_FROM_##__end (* ((guint##__size *) (__data)))) |
| |
| /** |
| * GST_READ_UINT64_BE: |
| * @data: memory location |
| * |
| * Read a 64 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT64_BE(data) _GST_GET (data, 64, BE) |
| /** |
| * GST_READ_UINT64_LE: |
| * @data: memory location |
| * |
| * Read a 64 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT64_LE(data) _GST_GET (data, 64, LE) |
| /** |
| * GST_READ_UINT32_BE: |
| * @data: memory location |
| * |
| * Read a 32 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT32_BE(data) _GST_GET (data, 32, BE) |
| /** |
| * GST_READ_UINT32_LE: |
| * @data: memory location |
| * |
| * Read a 32 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT32_LE(data) _GST_GET (data, 32, LE) |
| /** |
| * GST_READ_UINT16_BE: |
| * @data: memory location |
| * |
| * Read a 16 bit unsigned integer value in big endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT16_BE(data) _GST_GET (data, 16, BE) |
| /** |
| * GST_READ_UINT16_LE: |
| * @data: memory location |
| * |
| * Read a 16 bit unsigned integer value in little endian format from the memory buffer. |
| */ |
| #define GST_READ_UINT16_LE(data) _GST_GET (data, 16, LE) |
| /** |
| * GST_READ_UINT8: |
| * @data: memory location |
| * |
| * Read an 8 bit unsigned integer value from the memory buffer. |
| */ |
| #define GST_READ_UINT8(data) (* ((guint8 *) (data))) |
| |
| #define _GST_PUT(__data, __size, __end, __num) \ |
| ((* (guint##__size *) (__data)) = GUINT##__size##_TO_##__end (__num)) |
| |
| /** |
| * GST_WRITE_UINT64_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 64 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT64_BE(data, num) _GST_PUT(data, 64, BE, num) |
| /** |
| * GST_WRITE_UINT64_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 64 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT64_LE(data, num) _GST_PUT(data, 64, LE, num) |
| /** |
| * GST_WRITE_UINT32_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 32 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT32_BE(data, num) _GST_PUT(data, 32, BE, num) |
| /** |
| * GST_WRITE_UINT32_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 32 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT32_LE(data, num) _GST_PUT(data, 32, LE, num) |
| /** |
| * GST_WRITE_UINT16_BE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 16 bit unsigned integer value in big endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT16_BE(data, num) _GST_PUT(data, 16, BE, num) |
| /** |
| * GST_WRITE_UINT16_LE: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store a 16 bit unsigned integer value in little endian format into the memory buffer. |
| */ |
| #define GST_WRITE_UINT16_LE(data, num) _GST_PUT(data, 16, LE, num) |
| /** |
| * GST_WRITE_UINT8: |
| * @data: memory location |
| * @num: value to store |
| * |
| * Store an 8 bit unsigned integer value into the memory buffer. |
| */ |
| #define GST_WRITE_UINT8(data, num) ((* (guint8 *) (data)) = (num)) |
| |
| #else /* GST_HAVE_UNALIGNED_ACCESS */ |
| |
| #define _GST_GET(__data, __idx, __size, __shift) \ |
| (((guint##__size) (((guint8 *) (__data))[__idx])) << __shift) |
| |
| #define GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \ |
| _GST_GET (data, 1, 64, 48) | \ |
| _GST_GET (data, 2, 64, 40) | \ |
| _GST_GET (data, 3, 64, 32) | \ |
| _GST_GET (data, 4, 64, 24) | \ |
| _GST_GET (data, 5, 64, 16) | \ |
| _GST_GET (data, 6, 64, 8) | \ |
| _GST_GET (data, 7, 64, 0)) |
| |
| #define GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \ |
| _GST_GET (data, 6, 64, 48) | \ |
| _GST_GET (data, 5, 64, 40) | \ |
| _GST_GET (data, 4, 64, 32) | \ |
| _GST_GET (data, 3, 64, 24) | \ |
| _GST_GET (data, 2, 64, 16) | \ |
| _GST_GET (data, 1, 64, 8) | \ |
| _GST_GET (data, 0, 64, 0)) |
| |
| #define GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \ |
| _GST_GET (data, 1, 32, 16) | \ |
| _GST_GET (data, 2, 32, 8) | \ |
| _GST_GET (data, 3, 32, 0)) |
| |
| #define GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \ |
| _GST_GET (data, 2, 32, 16) | \ |
| _GST_GET (data, 1, 32, 8) | \ |
| _GST_GET (data, 0, 32, 0)) |
| |
| #define GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \ |
| _GST_GET (data, 1, 16, 0)) |
| |
| #define GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \ |
| _GST_GET (data, 0, 16, 0)) |
| |
| #define GST_READ_UINT8(data) (_GST_GET (data, 0, 8, 0)) |
| |
| #define _GST_PUT(__data, __idx, __size, __shift, __num) \ |
| (((guint8 *) (__data))[__idx] = (((guint##__size) __num) >> __shift) & 0xff) |
| |
| #define GST_WRITE_UINT64_BE(data, num) do { \ |
| _GST_PUT (data, 0, 64, 56, num); \ |
| _GST_PUT (data, 1, 64, 48, num); \ |
| _GST_PUT (data, 2, 64, 40, num); \ |
| _GST_PUT (data, 3, 64, 32, num); \ |
| _GST_PUT (data, 4, 64, 24, num); \ |
| _GST_PUT (data, 5, 64, 16, num); \ |
| _GST_PUT (data, 6, 64, 8, num); \ |
| _GST_PUT (data, 7, 64, 0, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT64_LE(data, num) do { \ |
| _GST_PUT (data, 0, 64, 0, num); \ |
| _GST_PUT (data, 1, 64, 8, num); \ |
| _GST_PUT (data, 2, 64, 16, num); \ |
| _GST_PUT (data, 3, 64, 24, num); \ |
| _GST_PUT (data, 4, 64, 32, num); \ |
| _GST_PUT (data, 5, 64, 40, num); \ |
| _GST_PUT (data, 6, 64, 48, num); \ |
| _GST_PUT (data, 7, 64, 56, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT32_BE(data, num) do { \ |
| _GST_PUT (data, 0, 32, 24, num); \ |
| _GST_PUT (data, 1, 32, 16, num); \ |
| _GST_PUT (data, 2, 32, 8, num); \ |
| _GST_PUT (data, 3, 32, 0, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT32_LE(data, num) do { \ |
| _GST_PUT (data, 0, 32, 0, num); \ |
| _GST_PUT (data, 1, 32, 8, num); \ |
| _GST_PUT (data, 2, 32, 16, num); \ |
| _GST_PUT (data, 3, 32, 24, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT16_BE(data, num) do { \ |
| _GST_PUT (data, 0, 16, 8, num); \ |
| _GST_PUT (data, 1, 16, 0, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT16_LE(data, num) do { \ |
| _GST_PUT (data, 0, 16, 0, num); \ |
| _GST_PUT (data, 1, 16, 8, num); \ |
| } while (0) |
| |
| #define GST_WRITE_UINT8(data, num) do { \ |
| _GST_PUT (data, 0, 8, 0, num); \ |
| } while (0) |
| |
| #endif /* GST_HAVE_UNALIGNED_ACCESS */ |
| |
| |
| /* Miscellaneous utility macros */ |
| |
| /** |
| * GST_ROUND_UP_2: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 2. |
| */ |
| #define GST_ROUND_UP_2(num) (((num)+1)&~1) |
| /** |
| * GST_ROUND_UP_4: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 4. |
| */ |
| #define GST_ROUND_UP_4(num) (((num)+3)&~3) |
| /** |
| * GST_ROUND_UP_8: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 8. |
| */ |
| #define GST_ROUND_UP_8(num) (((num)+7)&~7) |
| /** |
| * GST_ROUND_UP_16: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 16. |
| */ |
| #define GST_ROUND_UP_16(num) (((num)+15)&~15) |
| /** |
| * GST_ROUND_UP_32: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 32. |
| */ |
| #define GST_ROUND_UP_32(num) (((num)+31)&~31) |
| /** |
| * GST_ROUND_UP_64: |
| * @num: integer value to round up |
| * |
| * Rounds an integer value up to the next multiple of 64. |
| */ |
| #define GST_ROUND_UP_64(num) (((num)+63)&~63) |
| |
| /** |
| * GST_ROUND_DOWN_2: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 2. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_2(num) ((num)&(~1)) |
| /** |
| * GST_ROUND_DOWN_4: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 4. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_4(num) ((num)&(~3)) |
| /** |
| * GST_ROUND_DOWN_8: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 8. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_8(num) ((num)&(~7)) |
| /** |
| * GST_ROUND_DOWN_16: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 16. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_16(num) ((num)&(~15)) |
| /** |
| * GST_ROUND_DOWN_32: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 32. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_32(num) ((num)&(~31)) |
| /** |
| * GST_ROUND_DOWN_64: |
| * @num: integer value to round down |
| * |
| * Rounds an integer value down to the next multiple of 64. |
| * |
| * Since: 0.10.12 |
| */ |
| #define GST_ROUND_DOWN_64(num) ((num)&(~63)) |
| |
| void gst_object_default_error (GstObject * source, |
| GError * error, gchar * debug); |
| |
| /* element functions */ |
| void gst_element_create_all_pads (GstElement *element); |
| GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad, |
| const GstCaps *caps); |
| |
| GstPadTemplate* gst_element_get_compatible_pad_template (GstElement *element, GstPadTemplate *compattempl); |
| |
| G_CONST_RETURN gchar* gst_element_state_get_name (GstState state); |
| G_CONST_RETURN gchar * gst_element_state_change_return_get_name (GstStateChangeReturn state_ret); |
| |
| gboolean gst_element_link (GstElement *src, GstElement *dest); |
| gboolean gst_element_link_many (GstElement *element_1, |
| GstElement *element_2, ...) G_GNUC_NULL_TERMINATED; |
| gboolean gst_element_link_filtered (GstElement * src, |
| GstElement * dest, |
| GstCaps *filter); |
| void gst_element_unlink (GstElement *src, GstElement *dest); |
| void gst_element_unlink_many (GstElement *element_1, |
| GstElement *element_2, ...) G_GNUC_NULL_TERMINATED; |
| |
| gboolean gst_element_link_pads (GstElement *src, const gchar *srcpadname, |
| GstElement *dest, const gchar *destpadname); |
| void gst_element_unlink_pads (GstElement *src, const gchar *srcpadname, |
| GstElement *dest, const gchar *destpadname); |
| |
| gboolean gst_element_link_pads_filtered (GstElement * src, const gchar * srcpadname, |
| GstElement * dest, const gchar * destpadname, |
| GstCaps *filter); |
| |
| gboolean gst_element_seek_simple (GstElement *element, |
| GstFormat format, |
| GstSeekFlags seek_flags, |
| gint64 seek_pos); |
| |
| /* util elementfactory functions */ |
| gboolean gst_element_factory_can_src_caps(GstElementFactory *factory, const GstCaps *caps); |
| gboolean gst_element_factory_can_sink_caps(GstElementFactory *factory, const GstCaps *caps); |
| |
| /* util query functions */ |
| gboolean gst_element_query_position (GstElement *element, GstFormat *format, |
| gint64 *cur); |
| gboolean gst_element_query_duration (GstElement *element, GstFormat *format, |
| gint64 *duration); |
| gboolean gst_element_query_convert (GstElement *element, GstFormat src_format, gint64 src_val, |
| GstFormat *dest_format, gint64 *dest_val); |
| |
| /* element class functions */ |
| void gst_element_class_install_std_props (GstElementClass * klass, |
| const gchar * first_name, ...) G_GNUC_NULL_TERMINATED; |
| |
| /* pad functions */ |
| gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad); |
| |
| void gst_pad_use_fixed_caps (GstPad *pad); |
| GstCaps* gst_pad_get_fixed_caps_func (GstPad *pad); |
| GstCaps* gst_pad_proxy_getcaps (GstPad * pad); |
| gboolean gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps); |
| |
| GstElement* gst_pad_get_parent_element (GstPad *pad); |
| |
| /* util query functions */ |
| gboolean gst_pad_query_position (GstPad *pad, GstFormat *format, |
| gint64 *cur); |
| gboolean gst_pad_query_duration (GstPad *pad, GstFormat *format, |
| gint64 *duration); |
| gboolean gst_pad_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val, |
| GstFormat *dest_format, gint64 *dest_val); |
| |
| gboolean gst_pad_query_peer_position (GstPad *pad, GstFormat *format, |
| gint64 *cur); |
| gboolean gst_pad_query_peer_duration (GstPad *pad, GstFormat *format, |
| gint64 *duration); |
| gboolean gst_pad_query_peer_convert (GstPad *pad, GstFormat src_format, gint64 src_val, |
| GstFormat *dest_format, gint64 *dest_val); |
| |
| /* bin functions */ |
| void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED; |
| void gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED; |
| GstPad * gst_bin_find_unlinked_pad (GstBin *bin, GstPadDirection direction); |
| #ifndef GST_DISABLE_DEPRECATED |
| GstPad * gst_bin_find_unconnected_pad (GstBin *bin, GstPadDirection direction); |
| #endif |
| |
| /* buffer functions */ |
| GstBuffer * gst_buffer_merge (GstBuffer * buf1, GstBuffer * buf2); |
| GstBuffer * gst_buffer_join (GstBuffer * buf1, GstBuffer * buf2); |
| #ifndef GST_DISABLE_DEPRECATED |
| void gst_buffer_stamp (GstBuffer * dest, const GstBuffer * src); |
| #endif /* GST_DISABLE_DEPRECATED */ |
| |
| /* atomic functions */ |
| #ifndef GST_DISABLE_DEPRECATED |
| void gst_atomic_int_set (gint * atomic_int, gint value); |
| #endif |
| |
| /* probes */ |
| gulong gst_pad_add_data_probe (GstPad * pad, |
| GCallback handler, |
| gpointer data); |
| |
| gulong gst_pad_add_data_probe_full (GstPad * pad, |
| GCallback handler, |
| gpointer data, |
| GDestroyNotify notify); |
| |
| void gst_pad_remove_data_probe (GstPad * pad, guint handler_id); |
| |
| gulong gst_pad_add_event_probe (GstPad * pad, |
| GCallback handler, |
| gpointer data); |
| |
| gulong gst_pad_add_event_probe_full (GstPad * pad, |
| GCallback handler, |
| gpointer data, |
| GDestroyNotify notify); |
| |
| void gst_pad_remove_event_probe (GstPad * pad, guint handler_id); |
| |
| gulong gst_pad_add_buffer_probe (GstPad * pad, |
| GCallback handler, |
| gpointer data); |
| |
| gulong gst_pad_add_buffer_probe_full (GstPad * pad, |
| GCallback handler, |
| gpointer data, |
| GDestroyNotify notify); |
| |
| void gst_pad_remove_buffer_probe (GstPad * pad, guint handler_id); |
| |
| /* tag emission utility functions */ |
| void gst_element_found_tags_for_pad (GstElement * element, |
| GstPad * pad, |
| GstTagList * list); |
| void gst_element_found_tags (GstElement * element, |
| GstTagList * list); |
| |
| /* parse utility functions */ |
| GstElement * gst_parse_bin_from_description (const gchar * bin_description, |
| gboolean ghost_unlinked_pads, |
| GError ** err); |
| |
| GstElement * gst_parse_bin_from_description_full (const gchar * bin_description, |
| gboolean ghost_unlinked_pads, |
| GstParseContext * context, |
| GstParseFlags flags, |
| GError ** err); |
| |
| GstClockTime gst_util_get_timestamp (void); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_UTILS_H__ */ |
